Apparatus for cleaning metal walls, tubes, floors, and the like



- H. BASCHY. APPARATUS FOR CLEANING METAL WALLS, TUBES, FLogRs, AND THE LIKE. APPLICATION FILED .IU NE 25, 19 15- 1 $104,082, Patented Jan. 17, 1922.

UNITED STATES PATENT OFFICE.

HEINRICH BASCHY, OF HAMBURG, GERMANY.

APPARATUS FOR CLEANING- METAL WALLS, TUBES, FLOORS, AND THE LIKE.

Application filed. June 25, 1915.

Specification of Letters Patent.

Patented Jan. 17, 1922.

Serial No. 36,375.

' (GRANTED UNDER THE PROVISIONS OF THE ACT 0F MARCH 3, 1921, 41 STAT. L, 1313.)

To-aZZ whomz't may concern:

Be it known that I, HEINRICH BASOHY, a citizen of Hamburg and residing at Hamburg, in the German Empire, have invented certain new and useful Improvements insipparatus for Cleaning Metal NValls, Tubes, Floors, and the like, (for'which I have filed application in Germany, Sept. 16. 19141,) of which the following is a specification.

This invention relates to apparatus for cleaning meta-l walls, tubes, floors and the like and more particularly for removing the scale or incrustations of boilers. This apparatus is similar to such cleaning devices in which a disk like body is provided with implements either fixed or rotatable or otherwise movable, for instance chisels, cutting rolls or rose bits, which project beyond the rim of the disk, and on the rotation of the disk loosen or remove the scale or the like.

WVhen using these known devices particular care must be taken that the disk body is not held at an acute angle but must always be held at right angles to the surface to be cleaned, for if held at an acute angle the implements are apt to cut holes into the walls to be cleaned and the device will be pulled out of its working position. Even if the workman succeeds in avoiding such a mishap the special care which has to be taken will be a hindrance to a speedy working, and therefore a loss of time is the result. To avoid these drawbacks according to the present invention the implements are so positioned or journaled on the disk that they rotate not only about their axes in a plane parallel to the disk but also can turn or adjust themselves in all directions transversely to the said plane. Consequently by such lateral rotatability of the implements I in all directions they automatically position themselves into the most favorable position, and therefore cannot catch the wall to be cleaned in any injurious manner, no mat ter whether the disk-like body is held at right angles to the wall or not. The present apparatus also enables the cleaning of parts, which are otherwise difficult to be got at, for instance corners, rivetheads and the like. The handling of the apparatus is thus considerably simplified and facilitated and the operation is thus essentially improved.

A very important advantage of the present invention consists in providing the cutting implement with rollers having outer sharp cutting rims, which are particularly effective, but which if rotatable about a fixed axis would cut into the wall with great power, when the carrying disk is rotating at an acute angle to the wall operated upon. The effect of the cutting rollers being adapted toturn in all directions is particularly good, when they are slidable within the disk body in such manner, that on the quickly rotating body a flinging action of the cutting rollers has the eiiect of blows.

In the drawing Figure 1 shows the apparatus in a side view partly in section and Fig. 2 is a top plan view.

The body consists of two disks Z) fixed parallelly and at a certain distance "from one another, to a shaift a, which can be rotated in any suitable manner; for instance it may be attached to the known flexible shaft, not shown. Between the disks Z), cutting rollers c are journaled each having thus an annular preferably V-shaped groove 0 thus forming two sharp cutting ed es on the rollers. There rollers are provided on both sides with hemispherical projections d, which form studs, the common central line of which form the axis for the cutting rollers. By these hemispherical studs (Z the cutting rollers are journaled between the disks b, and have the effect that they can rotate in all directions, so that no matter at what angle the disks 6 are held, the cutting rollers will adjust themselves within the limits formed by the disks 6 themselves.

When the cutting rollers a project beyond the rim of the disks the cutting edges clean the wall operated upon, and they will adjust themselves automatically into roper position, when the disk body is he d obliquely to the wall or when the apparatus hits against a rivethead on its reciprocating motion or when any other projecting part is struck by the rollers.

Each cutting roller 0' is guided by the hemispherical studs cl in suitably shaped grooves e on the inner surface of the disks Z). These grooves e are curved to a spiral line leading towards the centre of the disks 6, and when the cuttin rollers 0 are hurled outward so that their hemispherical studs lie at the outer end of the grooves and the cutting edges project beyond the rim of the disk body. By reversing the direction of rotation of the disks b the rollers 0 Will be drawn inward to the'inner ends of the grooves. V 7

In operation the cutting rollers are hurled against the surface to be cleaned having a hammer like action against the same and rebounding into the inner part of the disk like body.

It is to be understood, that the cutting" implements need not have the shape oi cuttingrollers as shown, but may heconstruetcd in any other suitable manner.

I claim: 7

1. An apparatus %for cleaning metal Walls, tube s, floors and the like, comprising a plurality of oircular'rotatable and universally movable cutters, a rotatable carrier for the cutters consisting of two disks having curved grooves inrthe opposite faces thereof Within which the cutters are movably journale'd, said grooves being arranged eccentric to the axis of the carrier.

. 2. An apparatus for cleaning metal Walls, tubes, floors and the like, comprising a pair of parallel disks having grooves in their 

